20020202 has 4 divisors (see below), whose sum is σ = 30030306.
Its totient is φ = 10010100.
The previous prime is 20020199. The next prime is 20020207. The reversal of 20020202 is 20202002.
It is a semiprime because it is the product of two primes.
It can be written as a sum of positive squares in only one way, i.e., 19175641 + 844561 = 4379^2 + 919^2
20020202 is a modest number, since divided by 20202 gives 20 as remainder.
It is a self number, because there is not a number n which added to its sum of digits gives 20020202.
It is not an unprimeable number, because it can be changed into a prime (20020207) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5005049 + ... + 5005052.
Almost surely, 220020202 is an apocalyptic number.
20020202 is a deficient number, since it is larger than the sum of its proper divisors (10010104).
20020202 is a wasteful number, since it uses less digits than its factorization.
20020202 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 10010103.
The product of its (nonzero) digits is 16, while the sum is 8.
The square root of 20020202 is about 4474.3940371854.
The cubic root of 20020202 is about 271.5331253454.
Adding to 20020202 its reverse (20202002), we get a palindrome (40222204).
It can be divided in two parts, 200 and 20202, that added together give a palindrome (20402).
The spelling of 20020202 in words is "twenty million, twenty thousand, two hundred two".